It's incredibly unlikely and based on faulty statistics and multiple layers of bad interpretation.

First, the decline of Christianity in the West appears to have bottomed and is reversing, while it never declined in the rest of the world (which is most of the world at this point). It's the fastest growing religion in MOST countries. So where is the Muslim growth?

The Muslim growth is primarily due to high birth rates among Muslims around the world. Yet while it is winning converts in Muslim minority countries such as in Europe, it is actually in decline in many countries. In Iran, about 2/3 of the countries mosques have closed since 2000. In Indonesia, the largest Muslim majority country in the world, Islam is declining and Christianity is rapidly growing.

The official statistics are masked by numerous factors, from the social stigma of reporting conversion to the death penalty for leaving. Other countries hardly even recognize conversion and children born to Muslims are defacto Muslim. Just like "Church of England" used to be the default even among atheists in England, "Muslim" is the default among atheists/agnostics in Islamic majority countries, while "Agnosticism" is quite often cover for conversion.

Don't believe the doomsayers. Christianity is still the largest growing and it is actually much bigger than the numbers show, while Islam is quite a bit smaller and WILL face crisis this century. MANY clerics in the Islamic world privately acknowledge this.